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Method for optimizing access delay of wireless broadcast data

A wireless broadcast and data technology, applied in wireless communication, broadcast service distribution, electrical components, etc., can solve the problems of extended waiting time of mobile clients, increased broadcast cycle length, etc.

Inactive Publication Date: 2014-11-19
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, indexed data broadcasts increase the length of the broadcast cycle, which leads to extended waiting times for mobile clients

Method used

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  • Method for optimizing access delay of wireless broadcast data
  • Method for optimizing access delay of wireless broadcast data
  • Method for optimizing access delay of wireless broadcast data

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Experimental program
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Embodiment Construction

[0031] The technical solution of the invention will be described in detail below in conjunction with the accompanying drawings.

[0032] figure 1 It is a general flowchart of the method for optimizing wireless broadcast data delay access proposed by the present invention, including the following steps:

[0033] Step 1, assuming that the data set to be broadcast consists of s data items, that is, d 1 , d 2 ,... d s , for any data item d i , the probability of being visited is p i , let p 1 ≥p 2 ≥…≥p s , arrange all data items to be broadcast in descending order of access probability, that is, from hot data to unpopular data, assuming that the broadcast time of any data item is a time slot unit t, in a broadcast cycle, a certain data item d i The number of repeated broadcasts is f i , satisfying f 1 ≥ f 2 ≥...≥f s and f s = 1, the number of repeated broadcasts of popular data items is greater than that of unpopular data items, and each data item is broadcast at lea...

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Abstract

The invention relates to a method for optimizing access delay of wireless broadcast data. The method is characterized by comprising the following steps of: in an index broadcast period, firstly arraying to-be-broadcasted data items in a sequence that access probabilities are gradually decreased; then obtaining broadcasting proportions of each data item according to characteristics of an index broadcast under different index conditions including a single index condition and a multi-index condition, and then obtaining optimized repeated broadcasting number of times of each data item; and finally, uniformly distributing each data item in the broadcast period according to the obtained repeated broadcasting number of times, generating optimized broadcast allocation, and realizing a purpose of optimizing the access delay of hot spot data.

Description

technical field [0001] The invention relates to a method for optimizing delayed access of wireless broadcast data, which can reduce the average access time for users to monitor server broadcast, and belongs to the field of mobile data wireless broadcast scheduling technology. Background technique [0002] Data wireless broadcasting is an effective data access method, which can support a large number of mobile clients to access data concurrently at a very low cost. The server takes advantage of the unbalanced data communication between the client and the server, uses the wireless communication network as the medium, reasonably organizes the data that is actively concerned by most mobile users, and broadcasts it to the mobile users in a periodic manner. The mobile client listens to the broadcast channel, obtains the arrival time of the required information, and reads the required information until the data arrives. [0003] Acharya S. et al. of Brown University in the United ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/06H04W24/02
Inventor 吴家皋贺莹邹志强
Owner NANJING UNIV OF POSTS & TELECOMM
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